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<pre><span class="comment"> /****************************************************************************
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<span class="comment"> /*
  * KAsteroids - Copyright (c) Martin R. Jones 1997
  *
  * Part of the KDE project
  */</span>

 #include &lt;qpainter.h&gt;
<span class="comment"> //</span>Added by qt3to4:
 #include &lt;QResizeEvent&gt;
 #include &lt;Q3Frame&gt;
 #include &quot;ledmeter.h&quot;

 KALedMeter::KALedMeter( QWidget *parent ) : Q3Frame( parent )
 {
     mCRanges.setAutoDelete( TRUE );
     mRange = 100;
     mCount = 20;
     mCurrentCount = 0;
     mValue = 0;
     setMinimumWidth( mCount * 2 + frameWidth() );
 }

 void KALedMeter::setRange( int r )
 {
     mRange = r;
     if ( mRange &lt; 1 )
         mRange = 1;
     setValue( mValue );
     update();
 }

 void KALedMeter::setCount( int c )
 {
     mCount = c;
     if ( mCount &lt; 1 )
         mCount = 1;
     setMinimumWidth( mCount * 2 + frameWidth() );
     calcColorRanges();
     setValue( mValue );
     update();
 }

 void KALedMeter::setValue( int v )
 {
     mValue = v;
     if ( mValue &gt; mRange )
         mValue = mRange;
     else if ( mValue &lt; 0 )
         mValue = 0;
     int c = ( mValue + mRange / mCount - 1 ) * mCount / mRange;
     if ( c != mCurrentCount )
     {
         mCurrentCount = c;
         update();
     }
 }

 void KALedMeter::addColorRange( int pc, const QColor &amp;c )
 {
     ColorRange *cr = new ColorRange;
     cr-&gt;mPc = pc;
     cr-&gt;mColor = c;
     mCRanges.append( cr );
     calcColorRanges();
 }

 void KALedMeter::resizeEvent( QResizeEvent *e )
 {
     Q3Frame::resizeEvent( e );
     int w = ( width() - frameWidth() - 2 ) / mCount * mCount;
     w += frameWidth() + 2;
     setFrameRect( QRect( 0, 0, w, height() ) );
 }

 void KALedMeter::drawContents( QPainter *p )
 {
     QRect b = contentsRect();

     unsigned cidx = 0;
     int ncol = mCount;
     QColor col = colorGroup().foreground();

     if ( !mCRanges.isEmpty() )
     {
         col = mCRanges.at( cidx )-&gt;mColor;
         ncol = mCRanges.at( cidx )-&gt;mValue;
     }
     p-&gt;setBrush( col );
     p-&gt;setPen( col );

     int lw = b.width() / mCount;
     int lx = b.left() + 1;
     for ( int i = 0; i &lt; mCurrentCount; i++, lx += lw )
     {
         if ( i &gt; ncol )
         {
             if ( ++cidx &lt; mCRanges.count() )
             {
                 col = mCRanges.at( cidx )-&gt;mColor;
                 ncol = mCRanges.at( cidx )-&gt;mValue;
                 p-&gt;setBrush( col );
                 p-&gt;setPen( col );
             }
         }

         p-&gt;drawRect( lx, b.top() + 1, lw - 1, b.height() - 2 );
     }
 }

 void KALedMeter::calcColorRanges()
 {
     int prev = 0;
     ColorRange *cr;
     for ( cr = mCRanges.first(); cr; cr = mCRanges.next() )
     {
         cr-&gt;mValue = prev + cr-&gt;mPc * mCount / 100;
         prev = cr-&gt;mValue;
     }
 }</pre>
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